after reading through the bug report http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=601810 , I added this line to the SCSI section of /lib/udev/rules.d/60-libsane.rules, and now my 3200 photo is working through firewire!
# Epson Perfection 3200 | Epson Perfection 3200 PHOTO | Epson Perfection 3200 PRO KERNEL=="sg[0-9]*", ATTRS{type}=="3", ATTRS{vendor}=="EPSON", ATTRS{model}=="GT-9800", MODE="0664", GROUP="scanner", ENV{libsane_matched}="yes" Does that mean we can remove the untested bit from 1394 in the supported devices table?